Hi @mdamera,
APM Server 7.x will not be compatible with ES and Kibana 6.x, you can find details in the compatibility matrix. You might want to install the latest 6.8.x version of the APM Server until you are ready to upgrade your whole stack to 7.x. Most of the latest APM agents are compatible with the 6.8 version of the APM Server, find an overview in APM Agent/Server compatibility.
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.